 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.core.variables;

 import org.eclipse.core.runtime.CoreException;

 /**
  * Resolves the value for a dynamic variable. A dynamic variable extension
  * contributes a resolver which must implement this interface.
  * <p>
  * Clients contributing a dynamic variable are intended to provide an implementation
  * of this interface.
  * </p>
  * @since 3.0
  */
 public interface IDynamicVariableResolver {

     /**
      * Resolves and returns a value for the specified variable when referenced
      * with the given argument, possibly <code>null</code>
      *
      * @param variable variable to resolve a value for
      * @param argument argument present in expression or <code>null</code> if none
      * @return variable value, possibly <code>null</code>
      * @throws CoreException if unable to resolve a value for the given variable
      */
     public String resolveValue(IDynamicVariable variable, String argument) throws CoreException;
 }

